Mark World Water Day on March 22 by checking out our extended director's cut of "Towards a Greener, Better World with Jeffrey Sachs". Tune in as Dr. Sachs dives deeper into how humanity's 50,000-year-old dependence on conflict and suspicion keep us from enjoying the full benefits of our technological revolution. When we forget about territory or division and focus on innovation and exchange, Dr. Sachs argues, we can accomplish great things – to heal the planet and change the world.